Severity Rating: Critical
Revision Note: V1.1 (June 26, 2013): Added a link to Microsoft Knowledge Base Article 2780642 under Known Issues in the Executive Summary.
Summary: This security update resolves a privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a user opens a specially crafted RTF file. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.